~Snip~
Manchester City won 8 Premier League titles and 6 titles come from Pep Guardiola era in their club. He has massive contributions for the club and has a very important part in the club Hall of Fame, no doubt about Pep Guardiola's position in Manchester City in the present and in history.
Most of Man City trophies were won in the Pep Guardiola era, he also managed to make City the only team to win the EPL trophy in four consecutive seasons.
Some of the titles that Guardiola has won since becoming Man City coach:
Premier League (6x)
FA Cup (2x)
EFL Cup (4x)
UEFA Champions League (1x)
FA Community Shield (2x)
UEFA Super Cup (1x)
They just got some very bad matches but it's too early to predict that they will fall down more, which I really doubt to happen. They are strong and can recover from the crisis and they might lose Premier League title to Liverpool but a position in top four can be enough for Pep Guardiola to maintain his coach position. I think a worst position for Manchester City in this season can be 2nd or 3rd, not lower.
The bad period experienced by Man City is something that has rarely happened since being coached by Guardiola, this condition could happen to any club, especially now that they have lost their midfield general whose position is very difficult to replace by other players. Man City will not be a weak team even though they have not won in the last four games in all competitions, Guardiola knows what to do to catch up on the points deficit from Liverpool.